255.255.255.0 and Subnetting

Subnetsact as virtual fences, splitting a block of IP addresses into smaller units.

This practice relieves online grid congestion and allows for granular access across subnets.

A subnet mask identifies individual subnets.

Illustration of two people in one room with a virtual “fence” with the IP 255.255.255.0 on it

Lifewire / Joshua Seong

CIDR supports classless IP addressing and associates connection masks with IP connection numbers independent of their traditional class.

internet Classes

TheInterNIC organizationadministers internet domain names and divides IP addresses into classes.